This would be your great niece. The legality would depend on where you live and how old she is.
Your mothers sisters Granddaughter is your second cousin
Your mothers sisters Granddaughter is your second cousin
no....because she is a sister for you
No, it is not legal to marry one's granddaughter in Kansas. In all states in the United States, such marriages are considered incestuous and are prohibited by law.
Your sisters grandson would be your grandnephew.
Your granddaughter and your sister's grandson are second cousins.
Yes
Great neice
Your grand-niece.
Your son and your sisters child are first cousins. The granddaughter is out of synch by a generation. That will make them first cousins once removed.
Two sisters may marry in Nebraska but they may not marry each other.Two sisters may marry in Nebraska but they may not marry each other.Two sisters may marry in Nebraska but they may not marry each other.Two sisters may marry in Nebraska but they may not marry each other.
A Hindu boy can marry his mother's sister's son's daughter if he can support her. This is legally acceptable on a Vivah Sanskar.